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make show-index a builtin

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The git-show-index command is built as its own separate
program. There's really no good reason for this, and it
means we waste extra space on disk (and CPU time running the
linker). Let's fold it in to the main binary as a builtin.

The history here is actually a bit amusing. The program
itself is mostly self-contained, and doesn't even use our
normal pack index code. In a5031214c4 (slim down "git
show-index", 2010-01-21), we even stopped using xmalloc() so
that it could avoid libgit.a entirely. But then 040a655116
(cleanup: use internal memory allocation wrapper functions
everywhere, 2011-10-06) switched that back to xmalloc, which
later become ALLOC_ARRAY().

Making it a builtin should give us the best of both worlds:
no wasted space and no need to avoid the usual patterns.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King 2018-05-28 05:38:53 -04:00 committed by Junio C Hamano
parent 468165c1d8
commit ff417260cf
4 changed files with 5 additions and 2 deletions
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2
Makefile
View File

@ -642,7 +642,6 @@ PROGRAM_OBJS += http-backend.o
PROGRAM_OBJS += imap-send.o
PROGRAM_OBJS += sh-i18n--envsubst.o
PROGRAM_OBJS += shell.o
PROGRAM_OBJS += show-index.o
PROGRAM_OBJS += upload-pack.o
PROGRAM_OBJS += remote-testsvn.o
@ -1019,6 +1018,7 @@ BUILTIN_OBJS += builtin/rm.o
BUILTIN_OBJS += builtin/send-pack.o
BUILTIN_OBJS += builtin/shortlog.o
BUILTIN_OBJS += builtin/show-branch.o
BUILTIN_OBJS += builtin/show-index.o
BUILTIN_OBJS += builtin/show-ref.o
BUILTIN_OBJS += builtin/stripspace.o
BUILTIN_OBJS += builtin/submodule--helper.o

1
builtin.h
View File

@ -218,6 +218,7 @@ extern int cmd_send_pack(int argc, const char **argv, const char *prefix);
extern int cmd_shortlog(int argc, const char **argv, const char *prefix);
extern int cmd_show(int argc, const char **argv, const char *prefix);
extern int cmd_show_branch(int argc, const char **argv, const char *prefix);
extern int cmd_show_index(int argc, const char **argv, const char *prefix);
extern int cmd_status(int argc, const char **argv, const char *prefix);
extern int cmd_stripspace(int argc, const char **argv, const char *prefix);
extern int cmd_submodule__helper(int argc, const char **argv, const char *prefix);

3
show-index.c → builtin/show-index.c
View File

@ -1,10 +1,11 @@
#include "builtin.h"
#include "cache.h"
#include "pack.h"
static const char show_index_usage[] =
"git show-index";
int cmd_main(int argc, const char **argv)
int cmd_show_index(int argc, const char **argv, const char *prefix)
{
int i;
unsigned nr;

1
git.c
View File

@ -464,6 +464,7 @@ static struct cmd_struct commands[] = {
{ "shortlog", cmd_shortlog, RUN_SETUP_GENTLY | USE_PAGER },
{ "show", cmd_show, RUN_SETUP },
{ "show-branch", cmd_show_branch, RUN_SETUP },
{ "show-index", cmd_show_index },
{ "show-ref", cmd_show_ref, RUN_SETUP },
{ "stage", cmd_add, RUN_SETUP | NEED_WORK_TREE },
{ "status", cmd_status, RUN_SETUP | NEED_WORK_TREE },